Safety Barriers 2/1. Hazardous area. 250 V max I.S.

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2 Safety barriers Exchangeable back-up fuse for all safety barriers Snap-on mounting on rails: simultaneous connection to potential equalisation/ ground Simple selection: application specific single and dual-channel safety barriers for standard uses of the instrumentation Extensive program for general applications Short-circuit-proof Certifications of all important test sites available EMC tested, CE marking Installation in Zone possible R. STAHL safety barrier types 900, 900 and 900 can be used for: All standard applications of instrumentation: Analog input Analog output Digital input Digital output Temperature sensor Pressure sensor etc. General applications, if the power consumption does not exceed the limits of the type of intrinsic safety protection Hazardous area 50 V max I.S. PA /

3 Certifications 900 PTB, FM, UL, CSA, SA, FTZU, SEV, BKI, PROCHEM, VNIIEF 900 PTB, FM, UL, CSA, SA, FTZU, SEV, BKI, PROCHEM, VNIIEF 900 PTB, FM, CSA, SA, FTZU, SEV, BKI, PROCHEM, VNIIEF Marking (CENELEC) [EEx ia] IIC/IIB Technical data Input circuit Output circuit Transfer characteristic Leakage current with U N Temperature effect Short-circuit-proof Transmission frequency corresponding to selection tables corresponding to selection tables ma (if nothing different is specified) 0,5 %/0 K (if nothing different is specified) 50 khz (with: I m 50 ma) 00 khz (with: I m > 50 ma), (with resistive current limitation) 0 khz (with electronic current limitation) Mechanical data Dimensions see page /7 Casing material Polyamide 6 GF Weight 00 g Degree of protection according Terminals IP0 to IEC 59 Housing IP0 Type of connection Terminals (cage terminals): max. each.5 mm² flexible or solid core PA-terminals (Ex e version): each mm² flexible or solid core table according to function Transmitter supply barrier (Field circuit grounded) for intrinsically safe operation of -wire-transmitters Analog input, intrinsically safe, for analog, SMART and HART transmitters / Analog input, intrinsically safe, for analog and HART transmitters / V... 5 V DC; 50 ma Supply voltage for transmitter 900/ : V V U min 900/ : 5 V Umin U N Signal input/output... 0 ma /... 0 ma I N R L Load resistance R L 900/ : 50 W 900/ : 750 W... 0 ma I N Analog output 0... ma (Field circuit grounded) for intrinsically safe operation of control valves, i/p converters, indicators, etc. Analog output, intrinsically safe, for control valves, i/p converters, indicators / Rated operating voltage U N V DC IN Signal input/output 0... ma / 0... ma RL Voltage drop through the... 0 ma UN safety barrier 6,5 V + Additional information is found in list M "Safety barriers" /

4 table according to function (continued) Analog output 0... ma (Field circuit floating) for intrinsically safe operation of control valves, i/p converters, indicators, etc. Analog output, intrinsically safe, for control valves, i/p converters, indicators 5, 900/-5--0 IN 0 V... 5 V DC; ma V RL Signal input/output 0... ma / 0... ma..0 ma PA/ Voltage drop through the UN safety barrier 8,7 V Digital input load to "+" (Field circuit grounded) for intrinsically safe operation of contacts Digital input, intrinsically safe, for contacts, load to + 5, / IN UL Voltage drop through the 0 V... 5 V DC; 0 ma V Signal input/output contact / I N 0 ma safety barrier V Digital input load to ground (Field circuit grounded) for intrinsically safe operation of contacts Digital input, intrinsically safe, for contacts, load to ground 5, / V... 5 V DC V Signal input/output contact / I N 0 ma UN IN Voltage drop through the safety barrier V UL Digital output load to ground (Field circuit grounded) for intrinsically safe operation of solenoid valves, LED s, etc. Digital output, intrinsically safe, for solenoid valves, LED to ground 5, / Power supply U IN N 0 V... 5 V DC V Signal input/output contact to "+" / for load to RL UL UN ground Load voltage in no-load operation U L = U N - V with U N V, U L = V with U N > V Internal resistance 58 W Digital output load to "+" (Field circuit floating) for intrinsically safe operation of solenoid valves, LED s, etc. Binary output, intrinsically safe, for solenoid valves, LED to "+" 5, 900/ V.. 5 V DC IN V Signal input/output contact to "ground" / for load RL U N to "+" UL PA/ Load voltage in no-load operation U L = U N V with U N V, IN U L = V with U N > V Internal resistance 56 W Analog input for temperatures (Field circuit floating) for intrinsically safe operation of thermocouples Analog input, intrinsically safe, for thermocouples and other AC sensors 9, / UN Additional information is found in list M "Safety barriers" 6 V SS AC Internal resistance x 80,5 W Signal input/output : /

5 table according to function (continued) Analog input for temperatures (Field circuit floating) for intrinsically safe operation of Pt 00 in -wire connection Analog input, intrinsically safe, for Pt 00 in -wire circuit, /-0-00-, V SS AC Internal resistance x 0 W ± 0, W Signal input/output : Analog input for temperatures (Field circuit floating) for intrinsically safe operation of Pt 00 in -wire connection Analog input, intrinsically safe, for Pt 00 in -lead circuit, / / , V SS AC Internal resistance, feed circuit x 0 W ± 0, W Internal resistance, measuring circuit x 8 W Signal input/output : Analog input for load cells (Field circuit floating) for intrinsically safe operation of load cells in 6-wire connection Analog input, intrinsically safe, for load cells with balanced supply 8, / / / ± 7,5 V DC Internal resistance, supply circuit x 6 W Internal resistance, sensing circuit x 8 W Internal resistance, signal circuit x 8 W Signal input/output : Analog input for load cells (Field circuit floating) for intrinsically safe operation of load cells in 6-wire connection Analog input, intrinsically safe, for load cells with DC supply 9, / / / V DC Internal resistance, supply circuit x 0 W + V/I L Internal resistance, sensing circuit x W Internal resistance, signal circuit x W Signal input/output : Additional information is found in list M "Safety barriers" /

6 table according to technical data Single-channel safety barriers for general applications Polarity U N [V] R [W] U Z [V] I m [ma] Image no. Ordering code , 900/ ** + 6 8, / ** , / , / , / ,7V/I N* 5, / , / , / ,7V/I N* 9, / , / , / V / I N 9, / ,7V/I N* / / / / / V / I N / , / / / ,7 9, / ,7 0,, / ,7 0, / ,7 7, / , / , / , 0 900/ * I N max = 00 ma ** not short-circuit-proof Single-channel safety barriers with electronic current limitation for general applications Polarity U N [V] R [W] U Z [V] I m [ma] P m [mw] Image no. Ordering code ,9 V/I N 6, / U Load = 7 V 0, / ,9 V/I N / ,9 V/I N / Additional information is found in list M "Safety barriers" /5

7 table according to technical data (continued) Dual-channel safety barriers for general applications Polarity U N [V] R [W] U Z [V] I m [ma] P m [mw] Image no. Order code + / + U N = V, digital and analog output for special applications see list M 900/ / +,5 / 7,5 0 / 0 6 / 0 87 / / / / + / 80 / V/I N 8 / 8 9 / / / / + / 80 / V/I N 8 / 8 0 / / / / + / V/I N / V/I N 8 / 8 0 / 0 0 / 0 900/ / + 5 / 5 0 / 0 8 / 8 9 / / / / - / V/I N / V/I N 8 / 8 0 / 0 0 / 0 900/ / -,5 / 7,5 0 / 0 6 / 0 87 / / / / 9 / 9 78 / 78 / 80 / 80 0 / 0 900/ / / 8 / 8 5 / 5 50 / / / / / 69 / 69 8 / 8 7 / 7 0 / / Safe maximum values Functional technical values U z Maximum output voltage U N Rated operating voltage I m Maximum short-circuit current I N Rated current P m Maximum output power R End to end resistance Block diagrams of the safety barriers Additional information is found in list M "Safety barriers" /6

8 Dimensions (all dimensions in mm) /7